From: Josef Bacik <josef@toxicpanda.com>
To: Liu Bo <bo.li.liu@oracle.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: [PATCH v2 05/10] Btrfs: add extent map selftests
Date: Tue, 9 Jan 2018 12:31:03 -0500 [thread overview]
Message-ID: <20180109173102.iky3zwc5rhsur3vl@destiny> (raw)
In-Reply-To: <20180105195117.5131-6-bo.li.liu@oracle.com>
On Fri, Jan 05, 2018 at 12:51:12PM -0700, Liu Bo wrote:
> We've observed that btrfs_get_extent() and merge_extent_mapping() could
> return -EEXIST in several cases, and they are caused by some racy
> condition, e.g dio read vs dio write, which makes the problem very tricky
> to reproduce.
>
> This adds extent map selftests in order to simulate those racy situations.
>
> Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Thanks,
Josef
next prev parent reply other threads:[~2018-01-09 17:31 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-05 19:51 [PATCH v2 00/10] bugfixes and regression tests of btrfs_get_extent Liu Bo
2018-01-05 19:51 ` [PATCH v2 01/10] Btrfs: fix incorrect block_len in merge_extent_mapping Liu Bo
2018-01-09 17:24 ` Josef Bacik
2018-01-05 19:51 ` [PATCH v2 02/10] Btrfs: fix unexpected EEXIST from btrfs_get_extent Liu Bo
2018-01-09 17:27 ` Josef Bacik
2018-01-05 19:51 ` [PATCH v2 03/10] Btrfs: add helper for em merge logic Liu Bo
2018-01-09 17:27 ` Josef Bacik
2018-01-05 19:51 ` [PATCH v2 04/10] Btrfs: move extent map specific code to extent_map.c Liu Bo
2018-01-09 17:29 ` Josef Bacik
2018-01-05 19:51 ` [PATCH v2 05/10] Btrfs: add extent map selftests Liu Bo
2018-01-09 17:31 ` Josef Bacik [this message]
2018-01-05 19:51 ` [PATCH v2 06/10] Btrfs: extent map selftest: buffered write vs dio read Liu Bo
2018-01-09 17:32 ` Josef Bacik
2018-01-05 19:51 ` [PATCH v2 07/10] Btrfs: extent map selftest: dio " Liu Bo
2018-01-09 17:32 ` Josef Bacik
2018-01-05 19:51 ` [PATCH v2 08/10] Btrfs: add WARN_ONCE to detect unexpected error from merge_extent_mapping Liu Bo
2018-01-09 17:33 ` Josef Bacik
2018-01-05 19:51 ` [PATCH v2 09/10] Btrfs: add tracepoint for em's EEXIST case Liu Bo
2018-01-09 17:35 ` Josef Bacik
2018-01-19 18:15 ` David Sterba
2018-01-19 18:22 ` Nikolay Borisov
2018-01-19 23:32 ` David Sterba
2018-01-05 19:51 ` [PATCH v2 10/10] Btrfs: noinline merge_extent_mapping Liu Bo
2018-01-09 17:35 ` Josef Bacik
2018-01-08 19:57 ` [PATCH v2 00/10] bugfixes and regression tests of btrfs_get_extent David Sterba
2018-01-18 16:51 ` David Sterba
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180109173102.iky3zwc5rhsur3vl@destiny \
--to=josef@toxicpanda.com \
--cc=bo.li.liu@oracle.com \
--cc=linux-btrfs@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).